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<title>Input/Output Library</title>
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<h1>Input/Output library</h1>

<p>The Input/Output library includes components that are meant to
correspond to typical components found in electronics for interfacing
with a user.</p>

<table>
<tr><td align="right"><a href="button.html"><img class="icon" src="../../../icons/button.gif"></a></td>
	<td><a href="button.html">Button</a> &mdash; a push-button for user input</td></tr>
<tr><td align="right"><a href="dipswitch.html"><img class="icon" src="../../../icons/dipswitch.gif"></a></td>
	<td><a href="dipswitch.html">DIP Switch</a> &mdash; a row of small switches for user input</td></tr>
<tr><td align="right"><a href="joystick.html"><img class="icon" src="../../../icons/joystick.gif"></a></td>
	<td><a href="joystick.html">Joystick</a> &mdash; arcade-style joystick for x,y user input</td></tr>
<tr><td align="right"><a href="keyboard.html"><img class="icon" src="../../../icons/keyboard.gif"></a></td>
	<td><a href="keyboard.html">Keyboard</a> &mdash; ascii text user input</td></tr>
<tr><td align="right"><a href="led.html"><img class="icon" src="../../../icons/led.gif"></a></td>
	<td><a href="led.html">LED</a> &mdash; single-bit output as a colored light</td></tr>
<tr><td align="right"><a href="portio.html"><img class="icon" src="../../../icons/pio.gif"></a></td>
	<td><a href="portio.html">Port I/O</a> &mdash; bi-directional input/output (useful for FPGAs)</td></tr>
<tr><td align="right"><a href="rgbled.html"><img class="icon" src="../../../icons/rgbled.gif"></a></td>
	<td><a href="rgbled.html">RGBLED</a> &mdash; three-bit output as a multi-colored light</td></tr>
<tr><td align="right"><a href="7seg.html"><img class="icon" src="../../../icons/7seg.gif"></a></td>
	<td><a href="7seg.html">7-Segment Display</a> &mdash; display numbers or patterns</td></tr>
<tr><td align="right"><a href="hexdig.html"><img class="icon" src="../../../icons/hexdig.gif"></a></td>
	<td><a href="hexdig.html">Hex Digit Display</a> &mdash; display 4-bit data as a hex digit</td></tr>
<tr><td align="right"><a href="dotmat.html"><img class="icon" src="../../../icons/dotmat.gif"></a></td>
	<td><a href="dotmat.html">LED Matrix</a> &mdash; a grid of 1-bit lights</td></tr>
<tr><td align="right"><a href="tty.html"><img class="icon" src="../../../icons/tty.gif"></a></td>
	<td><a href="tty.html">TTY</a> &mdash; display ascii text</td></tr>
<tr><td align="right"><a href="fileviewer.html"><img class="icon" src="../../../icons/fileviewer.gif"></a></td>
	<td><a href="fileviewer.html">File Viewer</a> &mdash; display lines from a file</td></tr>
<tr><td align="right"><a href="rgbvideo.html"><img class="icon" src="../../../icons/rgbvideo.png"></a></td>
	<td><a href="rgbvideo.html">RGB Video</a> &mdash; full-color video output</td></tr>
</table>

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